package bean04;
public class Circle {


    private double r;

    public Circle(){
        this.r = 1;
    }
    public double getR() {
        return r;
    }


    public void setR(double r) {
        this.r = r;
    }

    public double findArea(){
        double s = 3.14 * r * r;
        return s;
    }

}